diff options
| author | Wolfgang Denk | 2010-04-27 22:53:04 +0200 |
|---|---|---|
| committer | Wolfgang Denk | 2010-04-27 22:53:04 +0200 |
| commit | c88d6ab19ffab06f372b15c290bdf5d6f1ebfe9a (patch) | |
| tree | 020001798e0f799032c68942bc7d0b13a65041ca /drivers | |
| parent | fbb0030e3894119c089256f16626edd166c7629c (diff) | |
| parent | 8cbb0ddd7e696c6a4be1ae3ab3c95d3c8f6a7031 (diff) | |
Merge branch 'next' of git://git.denx.de/u-boot-nios
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/serial/altera_jtag_uart.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/serial/altera_jtag_uart.c b/drivers/serial/altera_jtag_uart.c index fb28aa9eb94..2980e4d07c1 100644 --- a/drivers/serial/altera_jtag_uart.c +++ b/drivers/serial/altera_jtag_uart.c @@ -38,8 +38,16 @@ int serial_init( void ) { return(0);} void serial_putc (char c) { - while (NIOS_JTAG_WSPACE ( readl (&jtag->control)) == 0) - WATCHDOG_RESET (); + while (1) { + unsigned st = readl(&jtag->control); + if (NIOS_JTAG_WSPACE(st)) + break; +#ifdef CONFIG_ALTERA_JTAG_UART_BYPASS + if (!(st & NIOS_JTAG_AC)) /* no connection */ + return; +#endif + WATCHDOG_RESET(); + } writel ((unsigned char)c, &jtag->data); } |